NL17SZ32DFT2 Equivalent & Substitute Parts

Part Overview

The NL17SZ32DFT2 is a single-channel, 2-input OR Gate logic IC manufactured by onsemi in SC-88A (SC-70-5/SOT-353) surface mount packaging. This part is classified as obsolete, with 17,302 units currently in stock. Due to its obsolete status, identifying equivalent and substitute parts is essential for design continuity, long-term supply chain planning, and new production runs. Active alternatives from major manufacturers provide improved compliance and availability while maintaining functional and electrical compatibility.

Substiute Parts

NL17SZ32DFT2

onsemiIn Stock: 17365NL17SZ32DFT2 Datasheet

Current PartRFQ

NL17SZ32DFT2G

onsemiIn Stock: 20263NL17SZ32DFT2G Datasheet

DirectRFQ

SN74LVC1G32DCKR

Texas InstrumentsIn Stock: 275404SN74LVC1G32DCKR Datasheet

DirectRFQ

74LVC1G32SE-7

Diodes IncorporatedIn Stock: 6042174LVC1G32SE-7 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the NL17SZ32DFT2 is determined by the following critical parameters:

• Logic Function: All substitutes must be single-channel, 2-input OR gates
• Voltage Supply Range: Must support 1.65V ~ 5.5V operation
• Output Current Capability: Must provide minimum 32mA output drive (high and low)
• Package Compatibility: Must use 5-TSSOP, SC-70-5, or SOT-353 surface mount packaging
• Propagation Delay: Maximum 4.5ns @ 5V, 50pF load
• Operating Temperature Range: Must cover -55°C ~ 125°C or equivalent industrial range

The substitute parts are categorized as follows:

Direct Equivalent (NL17SZ32DFT2G): Identical part from the same manufacturer with active product status and improved RoHS compliance.

Direct Substitute (SN74LVC1G32DCKR): Texas Instruments equivalent meeting all electrical and mechanical parameters with faster propagation delay (4ns).

Similar Substitute (74LVC1G32SE-7): Diodes Incorporated alternative with superior propagation delay performance (1.7ns) and equivalent electrical specifications.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Preferred for Existing Designs)

NL17SZ32DFT2G is the optimal choice for direct substitution. It maintains identical electrical performance, supports the full -55°C ~ 125°C temperature range, and achieves ROHS3 compliance. This part is actively manufactured and widely available, eliminating supply chain risk associated with the obsolete NL17SZ32DFT2.

For New Designs or High-Volume Production

SN74LVC1G32DCKR (Texas Instruments) offers superior propagation delay (4ns vs. 4.5ns) with active product status and ROHS3 compliance. Texas Instruments maintains extensive distribution networks and long-term availability commitments. The operating temperature range (-40°C ~ 125°C) is suitable for most commercial and industrial applications, though designs requiring -55°C operation must use NL17SZ32DFT2G.

For Performance-Critical Applications

74LVC1G32SE-7 (Diodes Incorporated) provides the fastest propagation delay (1.7ns @ 5V, 50pF), beneficial for high-speed logic circuits. This part is ROHS3 compliant and actively produced. The higher quiescent current (200 µA vs. 1 µA) may impact low-power designs. Operating temperature range (-40°C ~ 125°C) is suitable for standard industrial applications.

Compliance Considerations

All substitute parts achieve ROHS3 compliance and REACH unaffected status, meeting modern regulatory requirements. The main part (NL17SZ32DFT2) is RoHS non-compliant and should be phased out in new designs.

Frequently Asked Questions (FAQ)

Q: Can NL17SZ32DFT2G be used as a direct drop-in replacement for NL17SZ32DFT2?

A: Yes. NL17SZ32DFT2G is electrically and mechanically identical to the main part, with identical voltage supply range (1.65V ~ 5.5V), output current (32mA), propagation delay (4.5ns @ 5V, 50pF), and operating temperature range (-55°C ~ 125°C). Both use SC-70-5/SOT-353 packaging. The primary difference is product status (active vs. obsolete) and RoHS compliance.

Q: What is the minimum operating temperature difference between substitutes?

A: NL17SZ32DFT2 and NL17SZ32DFT2G support -55°C minimum operation, while SN74LVC1G32DCKR and 74LVC1G32SE-7 support -40°C minimum. For applications requiring -55°C operation, only NL17SZ32DFT2 or NL17SZ32DFT2G are suitable.

Q: Are all substitutes pin-compatible?

A: Yes. All parts are single-channel, 2-input OR gates in 5-pin surface mount packages (5-TSSOP, SC-70-5, SOT-353). Pin configurations are identical across all listed parts.

Q: Which substitute has the best propagation delay performance?

A: 74LVC1G32SE-7 offers the fastest propagation delay at 1.7ns @ 5V, 50pF, compared to 4.5ns for the main part and 4ns for SN74LVC1G32DCKR. This performance advantage is relevant for high-speed digital circuits.

Q: What is the quiescent current difference, and does it matter?

A: NL17SZ32DFT2 and NL17SZ32DFT2G specify 1 µA maximum quiescent current, SN74LVC1G32DCKR specifies 10 µA, and 74LVC1G32SE-7 specifies 200 µA. For battery-powered or ultra-low-power applications, NL17SZ32DFT2G is preferred. For standard applications, the difference is negligible.

Q: Are all substitutes RoHS compliant?

A: NL17SZ32DFT2G, SN74LVC1G32DCKR, and 74LVC1G32SE-7 are all ROHS3 compliant. The original NL17SZ32DFT2 is RoHS non-compliant and should not be used in new designs subject to RoHS regulations.

Q: Which substitute offers the best long-term availability?

A: SN74LVC1G32DCKR (Texas Instruments) has the highest current inventory (275,300 units) and benefits from Texas Instruments' established distribution and long-term product support commitments, making it the most reliable choice for high-volume or long-lifecycle applications.